Paper-making machine



April 29, 1924rs H. L. KUTTER PAPER MAKING MACHINE Filed Aug. 28. '1922if the wire table vibrates as it Patented pr. 2Q, ld..

U NHT fi S are HERMAN L. KUTTER, 0F HAMILTON, OHI.

sarna-nannte amenazan.

To all whom it may concern.' l

Be it known that l, HERMAN L. Ku'rrnn,

ence being had to the accompanying draw.-

ing, forming a part of .this specification.

The present invention relates to paper making machines, especially ofthe Fourdrinier type, and its object is to provide for the bettercomposition of the sheet of paper as it is formed on the Wire-cloth.

ln the drawing which illustrates a ty ical Fourdrinier machine, with allparts W ich are unnecessa to an understanding of the present inventionomitted,-

Figure l is a side elevation of a machine embodying the invention.

Figure 2 is a partial vertical section thereof, and

Fi e 3 is a broken plan view of a` plate forming part of the invention.

rlhe machine employs the usual breastroll l and thel table 2 on whichthe usual table-rolls 3 are rotatably mounted. The endless wire-cloth 4passes around the breastroll 1 and thence forwardly over the tablerolls3. The table may be of the vibrating type or not as desired. y

The water containing the libres from which the sheet of pa er yis to beformed flows over the apron-boar 5 and the rubber apron 6 and onto thewire-cloth 4 approximately at the breast-roll 1. The sheet of paper 1sformed to a large extent by the passage of excess water throu h thewire-cloth between the end of the rub er apron 6 and the firsttable-rollv 3. lf the assage of water through the wire-cloth unimpededbetween the rubber apron and the first tableroll, the water passesthrough the wire-cloth so immediately and in such large volume justforwardly of the apron that the sheet of paper is largely formed at oncewith its full thickness. Such rapid formation of the sheet tends toproduce such a distortion of the fibres as to produce a poorlyconstituted sheet and this distortion is greatl enhanced oes in the morecommon form of Fourdrinier machine.

ln accordance with the r'esent invention a transverse plate 7 is suitaly su ported immediately under the wire-cloth 4 tween the breast-roll land the'first table-roll 3. rlhel plate 7 is formed with a plurality ofperforations 8. Preferably, but not necessarily, the perforations 8 areformed as elongated slots, and preferably, but not necessarily, theperforations are arranged in spaced series of transverse rows with theperforations in staggered relation, as illustrated in Figure 3. Therubber apron 6 ordinarily projects over the rear edge of the plate 7 sothat no water may flow through the wirecloth fl: until the water andlibres reach the lirst row of perforations 8 in the plate. lt may bedesirable, however, in the formation of certain kinds of sheets, to movethe rubber apron 6 back far enough to permit `a slight and limitedamount of water to pass through the wire-cloth before the rear edge ofthe late 7 is reached.

ln t e preferred and usual installation in cloth until the lirst row ofperforations in the plate 7 is reached. When the first row o fperforations is reached, a limited quantlty of water passes through thewire-cloth and furthery limited quantities of water pass through thewire-cloth as the successive rows of perforations are reached. As aconsequence, the libres tend to deposit in superimposed layers so thatthe sheet is made up of a plurality of thin lamnations with properly andregularly formed fibres. During the passage of the sheet thus formedoverthe succeeding table-rolls and through the press-rolls, the laminationsare compacted into a homogeneous sheet but with an absence of distortionof the libres.

Having thus described my invention, what l claim as new and desire tosecure by Letters Patent of the United States is l. In a Fourdriniermachine, the combination of a forwardly movable wire-cloth, and aperforated plate underlying the wirecloth adjacent the rear end thereof.

2. In a Fourdrinier machine, the combination of a forwardly movablewire-cloth, and a late underlying the wire-cloth ad-k jacent t e rearend thereof. the plate being formed with perforations arranged oneforwardly of another.

3. In a Fourdrinier machine, the combination of a forwardly movablewire-cloth, and a plate underlying the wire-cloth adjacent the rear endthereof, the plate being formed with perforations arranged in transverserows.

4. In a Fourdrinier machine, the combination of a forwardly movablewire-cloth, and a plate underlying the Wire-cloth adjacent the rear endthereof, the plate being formed with transversely elongated perforationsarranged in transverse rows.-

5. In a Fourdrinier machine,v the combination of a breast-roll, a seriesof table-rolls, a wire-cloth movable around the breastroll and forwardlyover the table-rolls, and a perforated plate underlying the wire-clothbetween the breast-roll and first table-roll.

6. In a Fourdrinier machine, the combination of a breast-roll, a seriesof' table-rolls, a wire-cloth movable around the breast-roll andforwardly over the table-rolls, and a plate underlying the wire-clothbetween the breast-roll and first table-roll, the plate being formedwith perforations arranged in transverse rows. s

7. In a. Fourdrinier machine, the combin ation of a breast-roll, aseries of table-rolls,

a. wire-cloth movable around the breast-roll tween the breast-roll andfirst table-roll, and an apron preventing passage of water through thewire-cloth in advance of the plate.

9. In a Fourdrinier machine, the combination of a breast-roll, a seriesof table-rolls, a wire-cloth movable around the breast-roll andforwardly over the table-rolls, a plate underlying the wire-clothbetween the breastroll and first table-roll. the plate being formed withperforations arranged in transverse rows` and au apron preventingpassage of water through the nire-cloth'in advance of the plate. v

l0. In a Fourdriniel` machine. the combination of a breast-roll, aseries ol tablerolls, a wire-cloth movable around the breast-roll andforwardly over the tablerolls. and a plate underlying the wire-clothbetween the breast-roll and first table-roll, the plate being formedwith perforations arranged one forwardly of another.

ll. In a Fourdrinier machine, the combination of a breast-roll, a seriesof tablerolls. a wire-cloth movable around the breast-roll and forwardlyover the tablerolls, a plate underlying the wire-cloth between thebreast-roll and first table-roll, the plate being formed withperforations ar ranged 'one forwardly of another, and an apronpreventing passage of water through the wire-cloth in advance of theplate. I

In witness whereof, I hereunto subscribe my name this 9th day of August,1922.

HERMAN L. KUTTER.

